Chelioscopy (Forensic Science)

THE SUBJECT AREA IS FORENSIC SCIENCE
The dissertation should cover Chelioscopy (Lip Prints).
More than 3 Classification and recovery methods of lip prints and a clear analysis.
What can lips prints be used for? Ethnicity? Race?
Do lip prints change across time? Does death make a difference?
It should be well structured having a title for every section.